PT96840A - Processo para a preparacao de lentes oftalmicas a base de fluoropolimeros amorfos e lentes obtidas por este processo - Google Patents
Processo para a preparacao de lentes oftalmicas a base de fluoropolimeros amorfos e lentes obtidas por este processo Download PDFInfo
- Publication number
- PT96840A PT96840A PT96840A PT9684091A PT96840A PT 96840 A PT96840 A PT 96840A PT 96840 A PT96840 A PT 96840A PT 9684091 A PT9684091 A PT 9684091A PT 96840 A PT96840 A PT 96840A
- Authority
- PT
- Portugal
- Prior art keywords
- units
- process according
- formula
- lens
- copolymer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 40
- 230000008569 process Effects 0.000 title claims description 34
- 238000002360 preparation method Methods 0.000 title claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 33
- 239000000178 monomer Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 239000004809 Teflon Substances 0.000 claims description 11
- 229920006362 Teflon® Polymers 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 5
- 125000001153 fluoro group Chemical group F* 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003856 thermoforming Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005903 acid hydrolysis reaction Methods 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims description 2
- 238000010559 graft polymerization reaction Methods 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 18
- 239000000243 solution Substances 0.000 description 13
- 239000002585 base Substances 0.000 description 10
- 239000008187 granular material Substances 0.000 description 8
- 235000019589 hardness Nutrition 0.000 description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- -1 Polytetrafluoroethylene Polymers 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- 229920002313 fluoropolymer Polymers 0.000 description 3
- 239000004811 fluoropolymer Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000002504 physiological saline solution Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 235000013580 sausages Nutrition 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- ABADUMLIAZCWJD-UHFFFAOYSA-N 1,3-dioxole Chemical compound C1OC=CO1 ABADUMLIAZCWJD-UHFFFAOYSA-N 0.000 description 1
- WHNPOQXWAMXPTA-UHFFFAOYSA-N 3-methylbut-2-enamide Chemical compound CC(C)=CC(N)=O WHNPOQXWAMXPTA-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 208000002177 Cataract Diseases 0.000 description 1
- 102100026735 Coagulation factor VIII Human genes 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000002784 sclerotic effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000002348 vinylic group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
- G02B1/043—Contact lenses
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Health & Medical Sciences (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Eyeglasses (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH57690 | 1990-02-23 | ||
| CH213590 | 1990-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT96840A true PT96840A (pt) | 1993-03-31 |
Family
ID=25685004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT96840A PT96840A (pt) | 1990-02-23 | 1991-02-21 | Processo para a preparacao de lentes oftalmicas a base de fluoropolimeros amorfos e lentes obtidas por este processo |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0443986A1 (de) |
| JP (1) | JPH05257093A (de) |
| KR (1) | KR910021600A (de) |
| AU (1) | AU642963B2 (de) |
| CA (1) | CA2036782A1 (de) |
| IE (1) | IE910607A1 (de) |
| IL (1) | IL97269A0 (de) |
| PT (1) | PT96840A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999056167A1 (en) * | 1998-04-28 | 1999-11-04 | Toray Industries, Inc. | Process for producing ocular lens |
| AU1924800A (en) * | 1998-12-21 | 2000-07-12 | Bausch & Lomb Incorporated | Contact lens articles made from perfluorinated comonomers |
| US6550915B1 (en) | 1998-12-21 | 2003-04-22 | Bausch & Lomb Incorporated | Surface treatment of fluorinated contact lens materials |
| US7534836B2 (en) | 2005-07-01 | 2009-05-19 | Bausch & Lomb Incorporated | Biomedical devices |
| US7582704B2 (en) * | 2005-07-01 | 2009-09-01 | Bausch & Lomb Incorporated | Biomedical devices |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01302303A (ja) * | 1988-05-31 | 1989-12-06 | Mitsubishi Rayon Co Ltd | プラスチッククラッドを有する光ファイバ及びその製法 |
| US5162391A (en) * | 1989-03-10 | 1992-11-10 | Kuraray Co., Ltd. | Oxygen permeable hard contact lens |
| US5115056A (en) * | 1989-06-20 | 1992-05-19 | Ciba-Geigy Corporation | Fluorine and/or silicone containing poly(alkylene-oxide)-block copolymers and contact lenses thereof |
| US5010141A (en) * | 1989-10-25 | 1991-04-23 | Ciba-Geigy Corporation | Reactive silicone and/or fluorine containing hydrophilic prepolymers and polymers thereof |
-
1991
- 1991-02-14 EP EP91810103A patent/EP0443986A1/de not_active Ceased
- 1991-02-18 IL IL97269A patent/IL97269A0/xx unknown
- 1991-02-19 AU AU71183/91A patent/AU642963B2/en not_active Expired - Fee Related
- 1991-02-21 PT PT96840A patent/PT96840A/pt not_active Application Discontinuation
- 1991-02-21 CA CA002036782A patent/CA2036782A1/en not_active Abandoned
- 1991-02-22 JP JP3048591A patent/JPH05257093A/ja active Pending
- 1991-02-22 KR KR1019910002900A patent/KR910021600A/ko not_active Withdrawn
- 1991-02-22 IE IE060791A patent/IE910607A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR910021600A (ko) | 1991-12-20 |
| CA2036782A1 (en) | 1991-08-24 |
| IE910607A1 (en) | 1991-08-28 |
| EP0443986A1 (de) | 1991-08-28 |
| IL97269A0 (en) | 1992-05-25 |
| AU7118391A (en) | 1991-08-29 |
| AU642963B2 (en) | 1993-11-04 |
| JPH05257093A (ja) | 1993-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3660545A (en) | Method of centrifugally casting thin edged corneal contact lenses | |
| US20040070107A1 (en) | Method of making lubricious polyacrylonitrile artificial joint components and resulting product | |
| EP1694721B1 (de) | Materialien zur herstellung einer hydrophoben intraokularlinse | |
| EP0741637B1 (de) | Verfahren zur behandlung von kontaktlinsen mit superkritischen fluidum | |
| US5300262A (en) | Process of spincasting a compound contact lens | |
| CA1097958A (en) | Ocular membrane and method for preparation thereof | |
| JPS6323126A (ja) | ソフトコンタクトレンズおよびその製造法 | |
| EP0220919A2 (de) | Kontaktlinse | |
| BRPI0713930A2 (pt) | molde de dispositivo biomédico solúvel em água | |
| TW200813519A (en) | Biomedical device mold | |
| PT96840A (pt) | Processo para a preparacao de lentes oftalmicas a base de fluoropolimeros amorfos e lentes obtidas por este processo | |
| US3841985A (en) | Irradiated composition for soft contact lens | |
| EP2136987A1 (de) | Formen mit thermoplastischen elastomeren zur herstellung von kontaktlinsen | |
| US4153349A (en) | Soft contact lens with thin edge | |
| US4559186A (en) | Production of borate crosslinked polyvinyl alcohol contact lenses | |
| US3940207A (en) | Soft, tough low refractive index contact lenses | |
| US4534723A (en) | Cutting device for the precision trimming of the edge of a centrifugally cast lens | |
| KR100938436B1 (ko) | 이식가능한 안구내 평면/볼록, 양면볼록, 평면/오목, 또는볼록/오목렌즈의 제조방법과 이 방법의 실시를 위해 사용된개방 몰드와 이 방법을 사용하여 제조된 렌즈 | |
| FI70232C (fi) | Mjuka kontaktlinser och foerfarande foer deras framstaellning | |
| US20050133949A1 (en) | Polymer solidification and coating process | |
| US6593451B1 (en) | Method of processing polyacrylonitrile | |
| JPH0755227B2 (ja) | 眼内レンズ前駆体成形用の成形型及び眼内レンズの製造方法 | |
| CN101663158A (zh) | 眼科镜片模具表面能差 | |
| WO2000037971A1 (en) | Contact lens articles made from perfluorinated comonomers | |
| JP2950866B2 (ja) | スパン注型複合レンズ及び製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19921008 |
|
| FC3A | Refusal |
Effective date: 19970701 |